Hydrocarbon evolution during pyrolysis of source rocks of Yacheng coal formation from the Yanan depression in the South China Sea

被引：3
|
作者：
Yang, Liu [1 ,2 ]
Qin, Yong [1 ,2 ]
Yin, Shi [1 ,2 ]
Shen, Yulin [1 ,2 ]
机构：
[1] China Univ Min & Technol, Minist Educ, Key Lab Coalbed Methane Resources & Reservoir For, Xuzhou, Peoples R China
[2] China Univ Min & Technol, Sch Resources & Earth Sci, Xuzhou, Peoples R China
来源：
PETROLEUM SCIENCE AND TECHNOLOGY | 2016年 / 34卷 / 07期
关键词：
Hydrocarbon generation characteristics; hydrocarbon generation potential; coal-bearing source rock; Yanan depression; thermal simulation; NATURAL GASES; QIONGDONGNAN BASIN; KINETICS; SHALE;
D O I：
10.1080/10916466.2016.1153654
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Closed-system pyrolysis experiments were conducted on coal and carbonaceous mudstone samples using gold tubes pressured to investigate the gas generation potential and evolution. The results indicate that the total gas potential of coal is 5times that of carbonaceous mudstone, and the total oil concentration is 2.5times that of carbonaceous mudstone. Methane continuously increased with increasing temperature of pyrolysis. The increase ratio of heavy hydrocarbon gas is the largest at low temperature. The gas evolution of both samples is controlled by activation energy. Coal can be divided into four stages, namely kerogen degradation, kerogen cracking, oil cracking, and C-2 cracking stage. Carbonaceous mudstone can be divided into kerogen cracking and oil cracking. The temperature of turning point for coal is higher than carbonaceous mudstone.
引用
收藏
页码：601 / 608
页数：8
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